Tweeting new highlights was just the start of a summer-long love affair with gradually lightening her hair for Demi Lovato, who has now returned to her original dark brunette color in time for fall! Over the weekend the star turned out at a Mexico City press conference for Camp Rock 2 with dark brown hair color that rivaled that of costar — and former boyfriend — Joe Jonas. And while we’ve loved seeing Demi play around with lighter hues, we think that the new color is ideal for the cooler weather. But what do you think? Tell us: Is Demi better as a brunette, or do you think she should lighten up again?